Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi. ARP Pro series kits are also available with 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.
Ford Cosworth Sierra/Escort
Fastener Style: Stud
Undercut Stud: No
Head Style: 12-point
Fastener Material: 8740 chromoly
Fastener Finish: Black oxide
Washers Included: Yes
Cut to Fit: No
Quantity: Sold as a kit.
Notes: Merkur XR4Ti and Cosworth Sierra/Escort engine.
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